Gas-cooking ring with means for controlling gas supply by a kettle, saucepan, or the like



A. PEARCE-TOWL. GAS COOKING RING WITH MEANS FOR CONTROLLING GAS SUPPLY BY A KETTLE,S1\UCEPAN,0R THE LIKE.

APPLICATION F-ILED JULY 14, 1920- 1,385,763. Patented July 26, 1921.

2 SHEE1SSHEET 1. FL K A. PEARCE-TOWL. v GAS COOKING RING WITH MEANS FOR CONTROLLING GAS SUPPLY BY A KETTLE, SAUCEPAN, OR THE LIKE.

APPLICATION FILED JULYI4, 192G.

Patented July 26, 1921;

' 2 sums-smear 2.

UNITED STATES ALFRED PEARCE-TOWL,

PATENT OFFICE.

OF OXFORD, ENGLAND.

GAS-COOKING- nnve wrrn: MEANS non conrnormnve ens SUPPLY BY A KETTLE,

SAUCEPAN, on THE LIKE.

Application filed July 14,

T 0 all whom it may concern: 4

Be it known that I,ALrnnD PnARoE-TowL a subject of the Kingof Great Britain and Ireland, and a resident of Oxford, county of Oxford, England, have invented a certain new and useful Improvement in Gas-Cooking Rings with Means for Controlling Gas Supply by a Kettle, saucepan, or the like, (for which I have filed an application in Great Britain, No. 142,276, April 16, 1919, Patent No. 142,276,) of which the following is a specification.

This invention relates to gas-cooking rings of the type in Which the suply of gas to a mixing chamber at or near the point of combustion is cut oif, when the kettle, saucepan or the like is removed from off said rings, there being provided a bypass to the burner to ignite the mixture when the kettle or the like is in position. The said invention relates more particularly to a gas-cooking ring of the foregoing type wherein is employed an arrangement of valve, and means operating same under the action of the kettle or the like, whereby a variable supply of gas is possible, regulated v by the placing on, disposition of and removal of the said kettel from the said valveactuating means.

The present invention consists chiefly of means for carrying the foregoing into effect, consisting of a rotary valve with different radial bores in an inner fixed member, which bores are brought into alinement with their respective exits (to mixture chamber) in an outer concentric rotary member by means of a stud or studs, upon which presses a pivoted lever, levers, or equivalents, so shaped that it or they may partially or completely depress the stud or. studs according to the movement of the kettle or the like as aforesaid. Various improved constructional features of the ring are also carried out according to this invention.

To render the invention clear, two sheets of drawings are appended, illustrating such an embodiment of the said invention; and in said drawings Figure 1 is a sectional elevation of a portion of a gas-ring.

Fig. 2 is a fragmentary view with por- Specification of Letters Patent. P te t J l 2 9 1920. Serial NO. 396,289.

tions broken away, looking in the direction of arrow in Fig. 1.

Fig. 3 is an end view of a regulator device; and,

F 4. a side view thereof; and,

Fig. 5 a section thereof, taken on the line as, w-Fig. 3.

In the form of the invention shown in the accompanying drawings, the gas regulator or valve is designated in its entirety by a, the same being located within the gas ring 5 at the junction of the tubular inlet extension 0, and throughwhich the gas supply plpe 7 passes as clearly shown in Fig. 1. The portion of the gas supply pipe f which projects into the valve chamber of thering provides a convenient support for the regulator or valve device a, and the arrangement and construction of the said valve device is such that the same may be automatibut means are provided whereby when a kettle or other utensil is placed upon the grate above the gas ring, the valve will be opened to a greater or less extent to permit of more or less gas entering the burner ring from the supply pipe; In this connection, it will beaunderstood that the position of the utensil with reference to the valve actuating means controls the amount of gas supply as may be seen by the dotted lines indieating various positions of the kettle with reference to the valve actuating means.

The burner ring 6 is preferably provided in the well known manner with an air inlet (Z so that mixing of air and gas takes place upon the immediate issuance of the gas from the valve or regulator a, leaving no appreciable space to cause a blow-back by pre-ignition, as frequently happens where the valve is located a considerable distance from the air mixer. Also a gas by-pass 6 having a pilot light may be arranged at any suitable and convenient place to ignite the burner when the valve a is actuated by the placing of a utensil thereover.

Referring now more particularly to the 7 construction of the valve on and its actuating ports 70 and Z when shifted by the utensiloperated meansto be presently referred to more in detail. The flanged ring or cap it is preferably engaged by a complemental cap member 2' having a weighted portion-m for normally rotating the relatively movable part il -7: so that the ports thereof will be out of registry with the ports 70 and Z of the ring or cap hmay be provided with the rib j for fitting in'a groove portion of the collar 9 to insure a gas-tight joint between the rear end of the relatively movable valve member and the relatively fixed valve part.

The upper portion of the rotatable valve casing h- -i carries an arm n adapted to engage with the lower end of a vertically movable stud '0, shown in Figs. 1 and 2, and which stud is adapted to be engagedby the lower edge of a depressible lever 15 which is pivoted in the supporting web 10 as in-' dicated at g in such a manner that its relatively free end 1' will project above the plane of the utensil seating position. The said portion or of the lever t is formed in such a manner that the same may be progressively engaged by the bottom edge of a utensil to be depressed from the position 15 Fig. 1 to the position 15 or the position t, or

any intermediate position to expose or uncover more openings of the collar 9 through the slot in the wall of the member it.

When a full light is desired, the kettle is placed on the burner so as to fully depress the stud which rotates the sleeve h to its fullest extent and brings into operation the large gas exit 70; while partial depression in the manner hereinafter described causes the smaller holes Z to register allowmg a llmltedsupply of gas. Removal of the kettle frees the stud, whereuponthe regulzlttordsleeve may revolve to its normal and c ose In conjunction with the stud-0 there is employed an actuating lever 25, pivoted near one side of its lower edge to the upstanding support web 39 of the gas ring, at the pivot g. This lever has one portion 7 of its upper edge inclined obtusely to the remaining portion, so that by sliding thekettle or the link- 8 in a direction opposite to the arrows the valve. collar g. As shown in Flg. 5, the flanged v p position gas off by the action of the weight m.

in Fig. 1, the lever is free to rise under the action of the weight m from the full on position to the simmer position (shown in dot-and-dash lines 6 by reason of the weight m carrying around the cap it to the simmer position. On: removing the kettle, the lever, assumes the position Z and the gas is cut off because the cap it has rotated correspondingly to the position indicated by h the weight position m-Fig. 2.

I claim j 1. An automatic gas supply device for burner rings including in combination with the burner ring and fuel supply pipe, a valve carried by the fuel supply pipe, and an operator for the valve projecting above the plane of seating of a utensil above the burner and having a portion adapted tobe progressively engaged by-the utensil to variably control 2.. An automatic gas supply device for burner rings including in combination with the burner ring and fuel supply pipe, a valve device carried by the end of the fuel supply pipe, means for automatically maintaining said valve: device closed, and utensil actuated means including a lever having a relatively inclined portion normally projecting above the plane of the utensil seating position and adapted to be depressed as the utensil is shifted laterally along said inclined edge to open the valve.

3. An automatic gas supply device for burner rings including in combination with the burner ring and fuel supply pipe, a valve device carried by the end of the fuel supply pipe, 'means for normally maintaining said valve closed, a vertically slidable stud engaging a portion of said valve, and lever means for depressing said stud to actuate said valve, said lever means comprising a lever having a relatively. inclined face normally projecting above the utensil seating position and adapted to beprogressively depressed by the'utensil to regulate the operation of the valve.

4. An automatic gas supply device for burner rings including in combination with the burner ring and fuel supplypipe, a valve device including a relatively rotatable valve member having a slot, a relatively fixed valve member having a plurality of gas discharge outlets adapted to be progressively uncovered by the slot in the rotatable valve, and utensil depressed means for shifting said rotatable valve member.

5. An automatic gas supply device for burner rings including in combination with the burner ring and fuel supply pipe, a valve device including a relatively rotatable valve member having a slot, a relatively fixed valve member. having a plurality of gas discharge outlets adapted to be progres valve, and utensil depressed means for shift ing said rotatable valve member, said means including a lever having a progressively inclined utensil engaging edge normally projecting above the plane of the utensil seating surface and adapted to be progressively depressed by the utensil to rotate the relatively movable part of the valve to uncover a greater number of ports in the relatively fixed valve member.

In testimony whereof I have affixed my signature hereto this 25th day of June, 1920.

ALFRED PEARCE-TOWL. 

